Watch: BBC visits factories in China with robot workers
"I take a nap and the world changes," says Chen Tianyu.
His world certainly does. The 28-year-old keeps up with the latest technology by spending his spare time in factories that are switching to automation. That way he knows what to prioritise when teaching his class about artificial intelligence (AI) and robotics.
In front of him, around 30 college students are studying code. One of them is typing furiously as his eyes dart from the screen to the robot: "The idea is it will grab that cylindrical piece and move it over there."
A line of industrial robots are waiting to be programmed, and in another part of the classroom, students are trying to develop robotic medical instruments. As he guides them, Chen declares: "If you are not needed by the world of AI and robotics, then you'll definitely be among those eliminated".
For the people in this room, this is a step – or rather a leap – towards a future that China is meticulously building: Xi Jinping's $20bn (£14.7bn) plan to put his country at the forefront of innovation and in direct competition with the US.
The evidence is all around them. They are in the Hangzhou Technician Institute, one of several huge, purpose-built vocational schools that want to churn out the next generation of tech-savvy engineers. The campus sits on the outskirts of Hangzhou, a former imperial capital whose futuristic skyline is just the first hint of its role as a global tech hub.
Across the country, there are more than two million robots working in China's factories – which is more than anywhere else – and they are continuing to scale up at extraordinary speed.
Students learning robotics at the Hangzhou Technician Institute, one of many new vocational schools
It is a commitment that will surely change the world, much like the last time the Chinese economy underwent a massive transformation. It is already shipping its robots across the globe: more than half of the world's industrial robots are now made in China.
What is less clear is the impact of such sweeping automation in a country that sits at the heart of global manufacturing, trade and innovation. What does this mean for China's human workforce, for instance? And how would we be able to truly measure the cost of this transformation in a regime that controls information so tightly?
The future of China's workers is uncertain in the industrial revolution the world has been watching: gleaming solar grids, peak hours made noiseless by electric vehicles, machines that run faster than Usain Bolt. Over the weekend, China hosted the second edition of the World Humanoid Games where robots boxed, sprinted and marched.
What is fuelling this spectacle is another, less visible revolution happening inside factories and classrooms.
The BBC has visited industrial sites where we have been shown robots that do not look human, or dance or leap on stage but weld, paint, lift, assemble and work around the clock without a break or benefits. Some are designed to build more robots. We have also been inside academies where China is training the people who will work alongside its robotic workforce.
This is a front-row seat to what Xi calls China's "new productive forces" – and how they could reshape the country.
